×

Seismic detection system and a method of operating the same

  • US 7,042,365 B1
  • Filed: 12/17/2004
  • Issued: 05/09/2006
  • Est. Priority Date: 05/20/2002
  • Status: Expired due to Fees
First Claim
Patent Images

1. A method of operating a seismic sensor comprising the:

  • steps of;

    (a) providing a seismic sensor, wherein the seismic sensor includes;

    (1) a set of accelerometers that generate electronic signals in response to vibrations caused by an earthquake;

    (2) a controller operationally coupled with the set of accelerometers and configured to receive the electronic signals and to determine whether the electronic signals represent an earthquake;

    (3) a switch having a first and a second state, operationally coupled with the controller, wherein the controller changes the state of the switch upon detection of an earthquake; and

    (4) a first enclosure for housing the set of accelerometers, the controller and the switch;

    (b) connecting the seismic sensor to a control system, wherein the control system includes;

    (1) a controller which is operationally coupled with the switch;

    (2) a second enclosure, larger than the first enclosure, for housing the controller;

    (c) fixedly mounting the seismic sensor adjacent to or inside of the control system;

    (d) periodically dismounting the seismic sensor and placing the seismic sensor on a vibration table, wherein the vibration table is operated to simulate the condition of an earthquake so that the seismic sensor operates to change the state of the switch; and

    (e) re-mounting the seismic sensor when the seismic sensor operates to change the state of the switch in response to the simulated condition of the earthquake.

View all claims
  • 0 Assignments
Timeline View
Assignment View
    ×
    ×